"He who wishes to have a proper herd of swine ought to choose them, in the first place, of the right age, and in the second place, of good conformation: which means large everywhere except in the head and feet and of a solid colour rather than spotted: but the boar should have without fail a thick neck in addition to these other qualities. Swine of good breed may be known from their appearance, if both boar and sow are of good conformation; from their get, if they have many pigs at a birth; and from their origin, if you buy them in a place with a reputation for producing fat rather than lean hogs. The usual formula for buying runs thus: 'Do you warrant that these hogs are in good health; that I shall take good title to them; that they have committed no tort, and that they do not come out of a diseased herd?' "Some add a particular stipulation that they are not affected with cholera. "In the matter of pasture, a marshy place is well fitted for hogs, because they delight not only in water, but in mud, the reason for which appears in the tradition that when a wolf has fallen upon a hog he always drags the carcass into the water because his teeth cannot endure the natural heat of hog flesh. "Swine are fed mostly on mast, though also on beans, barley and other kinds of corn, which not only make them fat but give the meat an agreeable relish. In summer they go out to pasture early in the morning and before the heat of the day: at midday they are brought into some shady place, preferably where there is water: in the afternoon, when the heat has abated, they are fed again. In the winter time they do not go out to pasture until the hoar frost has evaporated and the ice has melted.